人工智能驱动的冠状动脉疾病诊断从SPECT心肌输液成像:一个全面的深度学习研究
Ghasem Hajianfar1, Omid Gharibi2,3, Maziar Sabouri2,3
1Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva 4, CH-1211, Switzerland.
European journal of nuclear medicine and molecular imaging
|February 20, 2025
概括
深度学习模型在通过心肌输液成像 (MPI) SPECT扫描诊断冠状动脉疾病 (CAD) 中显示出前景,达到接近专家水平的准确性. 先进的培训策略和数据增强提高了CAD评估的诊断性能.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 单光子发射计算机断层扫描心肌输液成像 (SPECT-MPI) 是冠状动脉疾病 (CAD) 的标准非侵入性诊断工具.
- 对SPECT图像的视觉解释是耗时和主观的,限制了其临床实用性.
研究的目的:
- 开发和评估使用SPECT-MPI数据进行自动CAD诊断的深度学习 (DL) 模型.
- 探索各种监督和半监督的DL算法和培训策略,包括转移学习和数据增强.
- 将DL模型的性能与专家读者评估和侵入性冠状动脉血管学 (ICA) 作为参考标准进行比较.
主要方法:
- 总共有940名接受SPECT-MPI治疗的患者被分析,其中281人也接受了ICA.
- 定量 perfusion SPECT (QPS) 提取了休息和压力状态的极地图.
- 在728个模型中,使用6种不同的策略,包括数据增强,训练和验证了13种DL模型和4种输入类型.
主要成果:
- 在使用专家读者评估进行的自动诊断中,DenseNet201 Late Fusion的AUC达到0.89.
- 对于基于ICA的CAD预测,使用ResNet152V2 EarlyFusion (WoAug) 的半监督学习产生了0.77.7的最佳患者AUC.
- 突出地图表明,DL模型可以突出决定的相关领域.
结论:
- 对SPECT-MPI极地图的深度学习分析对CAD诊断具有重大潜力.
- DL模型表现出有希望的性能,在自动诊断中接近专家级准确度.
- 优化的培训策略,包括半监督学习和数据增强,改善了用于CAD检测的DL模型性能.
相关概念视频
Imaging Studies for Cardiovascular System IV: CMRI
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Imaging Studies for Cardiovascular System V: CT
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Acute Coronary Syndrome III: Diagnostic Studies
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Imaging Studies VII: Vascular Imaging
DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...


